Groton climate

Typical historical weather for Groton, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.

Want today's actual conditions instead? See the current forecast for Groton.

Annual average

11.7°C

across all months

Warmest month

28.4°C

Jul average high

Coolest month

-3.6°C

Jan average low

Annual rainfall

1251mm

total per year

Monthly averages

Average daily high/low temperature (band) and monthly rainfall (bars).

● Avg high● Avg low▮ Rainfall

Records on file

Hottest day

38.3°C

28 July 2020

Coldest day

-23.9°C

15 February 2016

Wettest day

105.4mm

11 December 2024

Windiest day

10m/s

2 March 2018